单词：fluorocarbonzl
二氯氟甲烷
单词：fluorocarbonzl 相关文章
Why refrigerators hum? Why refrigerators hum，on toay's moment of science.On the recent program we have discussed how fluorocarboncoolant cools your food by coming to a boil in coils hidden in your fridge. How is this possible? When you boil water o
发表于:2018-12-31 / 阅读(305) / 评论(0)
英语听力文摘 English Digest
英语听力文摘 English Digest
The Rolling Boil That Cools Your Food When you think of something boiling, you probably picture a pot on the stove, but theres another kitchen appliance that brings liquid to a boil, not to heat food, but cool it. It sounds crazy, but household refri
发表于:2018-12-31 / 阅读(322) / 评论(0)
英语听力文摘 English Digest
英语听力文摘 English Digest
By Lisa Bryant Paris 21 November 2007 A French judge has put former president Jacques Chirac under formal investigation for suspected embezzlement during his 1977-1995 tenure as Paris mayor. For VOA, Lisa Bryant reports from the French capital the ma
发表于:2019-01-31 / 阅读(295) / 评论(0)
VOA常速英语2007年（十一月）
VOA常速英语2007年（十一月）